CBS has released a new clip from this Monday's "Worlds Finest" episode of Supergirl.

In this one, The Flash comes racing into the DEO headquarters and is like a kid in candy store looking at all of their gadgets and Supergirl's spaceship. However, new DEO Chief, Lucy Lane, puts an end to Barry's fun.

Watch the sneak peek in the video below.

Check out preview images in our gallery at the bottom of the page.

Kara gains a new ally when The Flash arrives from an alternate universe and helps her fight the Silver Banshee and Livewire in exchange for her helping him return home.

“Worlds Finest” episode of Supergirl will air Monday, March 28 at 9 p.m. on CBS.

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